chore(pipeline): fix in-container default DBT conn

By default, we run DBT from within the airflow container (as is the case
in production).

Therefore it should be automatically connected to the docker hostname
and port of the datawarehouse, not the host ones.

If you need to use DBT from outside docker, then override the
appropriate environment vars (see .env.template)

pipeline/dbt/profiles.yml

@@ -4,8 +4,8 @@ data_inclusion:
     dev:
       type: postgres
       threads: 1
-      host: "{{ env_var('POSTGRES_HOST', 'localhost') }}"
-      port: "{{ env_var('POSTGRES_PORT', '5455') | int }}"
+      host: "{{ env_var('POSTGRES_HOST', 'target-db') }}"
+      port: "{{ env_var('POSTGRES_PORT', '5432') | int }}"
       user: "{{ env_var('POSTGRES_USER', 'data-inclusion') }}"
       password: "{{ env_var('POSTGRES_PASSWORD', 'data-inclusion') }}"
       dbname: "{{ env_var('POSTGRES_DB', 'data-inclusion') }}"